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Reports calls to <code>assertXXX()</code> or <code>fail()</code> without an error message string argument.
An error message on assertion failure may help clarify the test case's intent.
<p><b>Example:</b></p>
<pre><code>
  assertTrue(checkValid());
</code></pre>
<p>After the quick-fix is applied:</p>
<pre><code>assertTrue(checkValid(), "|");</code></pre>
<p>
  The message argument is added before or after the existing arguments according to the assertions framework that you use.
</p>
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